IBG tehnološki centar

Why UPPKA?


   Completion of aircraft Ni - Cd batteries with complete certainty that the battery meets all the requirements of the purpose is possible only from cells of known characteristics. During the exploitation of the battery, the degradation of certain characteristics of some of the cells gradually occurs, which is reflected in the quality of the entire battery.
   It would be ideal to mount the battery from completely correct cells that meet the standards of the battery manufacturer. How to find out about the quality of each cell in the battery standards? Even with enormous work and long-term measurements, it is practically impossible to determine with certainty the true condition of each cell, especially since such an effort implies a human factor. The means to determine this simply, quickly and safely without the influence of the human factor is UPPKA. It is necessary to dismantle the battery, place the cells in the device, enter the serial numbers, select and start the control cycle and wait for it to end. It is clear from the printed report that the condition of each cell can be seen. .
   A battery mounted from cells with approximately the same characteristics, above all, the capacity certainly meets the requirements of the purpose. There is no subjective assessment. What about cells that the device declares defective or their characteristics are significantly reduced? They certainly shouldn’t be thrown away right away. The device enables an attempt to revive them, primarily by erasing the "memory" effect by deep discharge and electrolyte control. A large number of cells can be saved in this way. In the case of cells where such an attempt at resuscitation fails, they are not for use and there is still an attempt to repair them at the manufacturer.
Why is a printed control cycle report important?
A permanently recorded record of cell treatment keeps records of the date of treatment, the temperature conditions in which the treatment was performed, the condition and grade for each cell, as well as the operator who performed it.
The diagnostics contained in the report provide information on the reasons for the malfunction, such as:
- Insufficient electrolyte level (marked with number 1)
- Increased internal resistance (marked with number 2)
- Reduced capacity (marked with number 3)
This type of diagnostics immediately instructs the operator on possible further procedures with cells that are defective cells that the device declares defective. .

Purpose:

The device is intended for use in battery stations at battery manufacturers and in repair centers for Ni - Cd batteries, for batteries with a capacity of 36 Ah, 26 Ah, 22 Ah and 17 Ah. The device has four programmed cycles: charging, discharging, recharging and control cycle. This allows virtually all types of battery treatment including deep discharge up to 50 mV per cell. Charging and discharging currents are programmed and kept constant regardless of the change in mains voltage or the state of the cell capacity of the microcomputer, and their control is not required during the process. The device works completely automatically, it is not necessary to monitor it during operation and it is immune to the influence of the human factor in displaying the results of cell treatment.

TECHNICAL CHARACTERISTICS:

Power supply:	220 V +10% -15%; 50 Hz
Consumption:	MAX 600VA
Channel number:	20
Temperature range :	0°C - 35°C
Regular temperature range:	+10°C ÷ 30°C
Clock accuracy:	±4 sec in 24 hour
Watch battery:	Litium 3V (changes to 10 yrs )
Display:	LCD 2 x 16 Character Keyboard: 16 keys for data entry and command
Printer:	M - 180 - EPSON (paper tape 56 mm)
Indications:	LED - three colors: charge, discharge, deep discharge, cell connection error, faulty cell, faulty module, ready for operation, completed cycle.
Alarm:	Inadequate ambient temperature (sound and light), faulty cell (sound).
Thermometer	Electronic from 0°C to 64°C
Dimensions:	770 x 480 x 655 mm
Weight:	110 kg
Mikroprocesori:	21 pcs ATMEL
Software:	Local and main can be adapted to the needs of users
Protection	from power outages, voltage surges, electrical interference
Interface for the main computer center for data processing from multiple devices - on request.

Mode:

Control, charging, discharging and deep discharging of aircraft Ni - Cd batteries with capacities of 36Ah, 26Ah, 22Ah and 17Ah. Device capacity: 20 cells at a time (the battery is dismantled and each cell treated separately). The cells are placed in the bearings of the device and clamped by a special mechanism in order to avoid deformations during the treatment.
Programmed cycles: Charging, recharging, discharging, control cycle. Charging: Constant current (controlled by microcomputer) 0.1 Cn for 14 hours. The charging current and the voltage on the cell on any of the 20 channels can be seen at any time on the display.
Automatic interruption of charging after 14 hours. Deactivation and signaling of defective cells.
Recharging: Discharge with constant current (controlled by microcomputer) 0.85 Cn to a voltage of 1V and immediate deep discharge to a voltage of 50 mV. Automatic switching to 0.1 Cn constant current charging for 14 hours.
Duration maximum 17 hours.
Discharge: with a constant current of 0.85 Cn to a voltage of 1V and immediate deep discharge of 50 mV. Discharge currents or deep discharges and cell voltage on any of the 20 channels can be seen at any time.
Control cycle: There are five phases that take place automatically one after the other.
Phase I: Discharge and deep discharge. The discharge time "T1" is stored when the voltage on the cell reaches 1V. Phase II: Starts when the last 20 cells are deeply emptied. Charging for 14 hours. constant voltage control. They exclude cells where the voltage exceeds 1.7. After charging, take a two-hour break. Electrolyte can be topped up. The open circuit voltage is measured after 2 hours, cells whose voltage is not in the range of 1.3 ÷ 1.4 V are excluded from the further process.
Phase III: Discharge. The time "T2" when the voltage 1V is reached is stored
Phase IV: Analysis of the correctness of cells according to given criteria.
Phase V: Print results, Maximum 20 hours

Results:

They can be viewed on the display for each channel or printed out. They contain the following information: start and end date of the cycle, battery type, duration of inadequate ambient temperature, charging current, discharge current, cell serial number, "T1", open circuit voltage, time "" T2 ", capacity and correctness cells gives the reason for the malfunction.
The main software has the following menus: Battery type, serial number, cycle selection, results, print results, printer test, clock and calendar. Programming: involves selecting the battery type, entering the serial number for each channel and selecting the cycle.
Usage: Unlimited (0 - 24 hours) 365 days a year. Fully automatic operation after start. No monitoring required.